Electrically-heated device.



F. E. GARLSON.

ELECTRIGALLY HEATED DEVICE.

APPLICATION FILED DEC. 4, 1913.

1,105,962, Patented Aug.4, 1914.

I WITNESSES: [N V E N TOR.

144 flederick E. Carlson- M A TTORNE Yv ment of the invention has To all whom it may concern end of the handle.

1 UNITED STATES PATENT orrion;

FREDER ICK E. CARLSON, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR T0 LANDERS,

FBARY & CLARK, OF NEW BRITAIN, CONNECTICUT, A CORPORATION OF CON- NECTICUT.

Be it known that I, FREDERICK E. CARLson, a citizen of the United States, and a resident of New'Britain, in the county of Hartford, State of Connecticut, have invented certain new and useful Improvements in Electrically-Heated Devices, of which the following is a specification.

This invention relates particularly to an electrically heated device of cylind'rlcal shape, such forexample as can be conveniently used as a curling iron, which embodibeen selected for illustration and description. It is also adapted for other uses, such as the heating of water, by placing it in the container which holds the water.

In the drawings-Figure 1 is a side view of a combined curling iron and comb made in accordance with my invention. Fig. 2 is a sectional view on the line 2-2 of Fig. 1, lockingin the direction of the arrow. Fig. 3 is a longitudinal sectional view of the device with the comb and clip removed. Fig. 4 is an elevation view of the heating element with parts broken away to show construction. Fig. 5 is a transverse sec tioiial view thereof on the line of Fig. 4. Fig. 6 isa side view of the comb attachment. Fig. 7 is an end view thereof.

Describing the embodiment of the invention selected for illustration, a denotesthe handle having a longitudinal bore within which is secured a sleeve Z) preferably of olygonal shape, which projects from the front of the handle for a short distance as indicatedat c, and stops short of the rear d is the-curler which is a hollow cylindrical body which may be slightly tapering as shown in the drawings and is of a size to fit closely within the sleeve but having a small area of contact therewith owing to the polygonal shape of the sleeve which may conveniently be hexagonal as shown. \Vhat may be termed the shank of the curler is'of reduced diameter between the ends of the sleeve as indicated at e in Fig. 2, the shank thus having a bearing in the sleeve for a short distance at each end and being out of contact therewith throughout the greater part of its length, thus preventing direct conduction of heat from the shank to the sleeve and so to the handle. At the end of the shank there is secured a, bushing f to Specification of Letters Patent.

ELECTRICALLY-HEATED DEVICE.

Patented Aug. 4, 1914.

Application filed December 4, 1913'. Serial No. 804,639.

which an insulating sleeve 9 is secured,"-

which covers up the circuit connections with the heating element.

At diametrically opposite points in the projecting end 0 of the sleeve 6 key slots h are formed. The clip a customarily used with the curler has oppositely projecting pins j which can be slid into the key slots and held in position in the slight enlargement at the ends thereof by the spring is located underneath the thumb piece Z, the

spring also normally holding the clip down onto the body of the curler as clearly seen in Fig.1. This provides a convenient and simple method of detachably assembling the clip with the curler.

The comb n has-a cylindrical back 0 the diameter of which is slightly smaller than the diameter of the curler, and is longitudinally slotted throughout its length as at 79 in order that it may hug the body of the curler very closely and more readily take the heat; At the end of the comb there is I I provided a polygonal-socket s of a shape corresponding to the shape of the sleeve 7) and which is adapted to fit onto the projecting end c of-the sleeve to hold the comb againstturning movement.

The heating element comprises a thin fiat core 2 of insulating material, such as mica, about which is wound the resistance material which may conveniently be a coil of wire as indicated at 3, against which other strips of mica 4: are laid to separate the wire coil from the strips of conducting material 6, 6, from the edge or edges of which spring the curved yielding flanges 7, which are so shaped as to give the heater a cylindrical form slightly larger than the interior of the body of the curler, with the result that these spring flanges being under slight compression when they are assembled within the curler are pressed into intimate contact with the curler and provide an effective heat conducting path from the heater to the curler. As shown, these strips-6 have oppositelyv curved flanges from each edge, but

it is of course immaterial how these flanges are formed so long as they are arranged to give a large area of contact with the inner wall of the body and provide an effective heat conducting path. The resistance wire is coiled only about that part of the of the coil are carried to the end of the heater where it projects from the rear of the handle, where they are connected with the circuit wires l0, l1, and covered by the insulating sleeve g.

In its broader aspect this invention provides an extremely efl'ective and efficient heater in a smallcompass and one which is adapted for a variety of uses.

A particular utility of the invention is to be found in its use as a curling iron, heated comb, etc., and I do not wish it to be understood that the broader claims on the electrical heater are limited to its use in or as a curling iron.

I claim as my invention 1. In a device of the character described, a handle, a sleeve of polygonal cross sect-ion mounted therein, a curler supported in the ends of said sleeve and out of contact with the intermediate portions thereof, and a 'heatingfelementlocated within said curler in heat conducting relation with the exposed part thereof.

2. In a device of the character described, a hollow cylindrical curler and an electrical heating element niounted therein, said element comprising a resistance material, heat conducting members located at the opposite sides therof and in heating relation therewith, and curved resilient vflanges springing from an edge of said members and conforming in shape and size to the interior of said curler.

' 8. In a device of the character described, a handle, a sleeve of polygonal cross section mounted in said handle and projecting from the front end thereof, a curler supported by said sleeve, key slots formed in the forward end of said sleeve at diametrically opposite points, a clip coiiperat-ing with said curler and provided with pivot pins adapted to fit within said key slots, a spring adapted to hold said pivot pins in engagement with said sleeve, a comb provided with an expansible tubular back adapted to fit upon said curler, a member of polygonal shape secured to the end of said comb and adapted in size and shape to fit the end of said sleeve and hold the parts against relative turning motion, and an electrical heater located within Sfitld curler and in heating relation therewit 1 4:. In a device of the character described, the combination with a handle and a hollow cylindrlcal curler supported thereby, and a heating element located Within said curler and in heating relation therewith, of diainsulating metrically opposite key slots at the forward the combination with the hollow cylindrical body,of an electrical heating element located therewithin, said heating element comprising a thin flat core of mica, a resistance wine coiled about said core, insulating material laid against the sides of said coil, and strips of conducting materiallaid against the said strips, and curved resilient flanges formed at the edges of said strips of conducting material, conforming in shape and size to the interior of said body.

6. An electrical heater of the character described, comprising a cylindrical shell and a heating element located therein, said elenient'comprising a resistance, a heat conducting memher arranged in heating relation with the resistance and' a resilient flange at an edge of said member and shaped to conform to and be fitted against the wall of the cylindrical shell.

7. In an electrical heater, a cylindrical shell and a heating element located therein, said element comprising a thin flat resistance member, heat conducting members arranged against the side of said element, and oppo sitely curving resilient flanges springing from the edges of said conducting members, conforming in shape to theshape of said shell, said flanges being held under compres sion within said shell.

8. An electrical heater comprising a tapering cylindrical shell closed at one end, and a heating element removably located within said shell, said element comprising a resistance and a heat conducting member secured in heating relation with said resistance and provided with a resilient edge flange-shaped to fit within and against the wall of said shell. p

9. An electrical heater comprising a cylindrical shell, a resilient member of heat conducting material whose cross section corresponds approximately to the shape of the inner wall of the shell and adapted to fit within said shell under slight compression,

and an elctrical resistance in heating relation with said member.v

. FREDERICK E. CARLSON. Witnesses ARTHUR 'll. EVANS, Jnssn J.. FOSTER. 

